The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2011
Filed:
Jun. 11, 2003
Koji Igarashi, Tokyo, JP;
Shunichi Matsushita, Tokyo, JP;
Shu Namiki, Tokyo, JP;
Shigehiro Takasaka, Tokyo, JP;
Takashi Inoue, Tokyo, JP;
Hideaki Tobioka, Tokyo, JP;
Jiro Hiroishi, Tokyo, JP;
Koji Igarashi, Tokyo, JP;
Shunichi Matsushita, Tokyo, JP;
Shu Namiki, Tokyo, JP;
Shigehiro Takasaka, Tokyo, JP;
Takashi Inoue, Tokyo, JP;
Hideaki Tobioka, Tokyo, JP;
Jiro Hiroishi, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having at least one of a soliton converter, a pulse roller, a Kerr-shutter and a soliton purifier. The solilton converter uses an anomalous-dispersion fiber (ADF) having a fiber length up to three times the soliton frequency, and the pulse roller is provided with a pulse roller fiber having high non-linear characteristics. The Kerr-shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference. The soliton purifier has a soliton fiber disposed between two optical fibers.